.content1{
  width: 100%;
  padding-bottom: 90px;
  overflow: hidden;
  background-color: #FFF;
}
.content1 .title{
  font-size: 32px;
  font-weight: bold;
  text-align: center;
  margin-top: 40px;
}
.content1 .desc{
  text-align: center;
  margin-top: 20px;
}
.content1 ul {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  margin-top: 50px;
}
.content li {
  background-color: #CCC;
  text-align: center;
}
.content1 li img {
  width: 80%;
  margin-left: 10%;
  box-shadow: 0px 0px 15px rgba(0,0,0,.3);
}
.content1 .content1_title{
  font-weight: bold;
  color: #666;
  font-size: 18px;
  margin-top: 10px;
  text-align: center;
}
.content1 .content1_content{
  font-size: 12px;
  color: #333;
  line-height: 20px;
  margin-top: 10px;
  text-align: center;
}
.content2{
  width: 100%;
  /*padding-bottom: 90px;*/
  overflow: hidden;
  background-color: #222;
}
.content2 .title{
  font-size: 32px;
  font-weight: bold;
  text-align: center;
  margin-top: 40px;
  color: #FFF;
}
.content2 .desc{
  text-align: center;
  margin-top: 20px;
  color: #e7e7e7;
}
.content2_item{
  width: 80%;
  max-width: 1000px;
  margin: 0 auto;
  margin-top: 120px;
  margin-bottom: 180px;
}
.content2_item img{
  width: 100%;
  box-shadow: 10px 10px 50px 20px rgba(0,0,0,.8);
}
.content3{
  width: 100%;
  padding-bottom: 90px;
  overflow: hidden;
  background-color: #FFF;
  position: relative;
}
.content3 .title{
  font-size: 32px;
  font-weight: bold;
  text-align: center;
  margin-top: 40px;
}
.content3 .desc{
  text-align: center;
  margin-top: 20px;
}
.content4{
  width: 100%;
  text-align: center;
  background-color: #000;
  color: #CCC;
  font-size: 12px;
  padding: 5px 0px;
}
@media screen and (min-width: 800px){
  .content1 li{
    float: left;
    margin-left: 3%;
    width: 30%;
    max-width: 360px;
    display: block;
  }
}

@media screen and (max-width: 800px){

}
